Strength of Correlation Effects in the Electronic Structure of Iron
2009 (English)In: Physical Review Letters, ISSN 0031-9007, Vol. 103, no 26, 267203- p.Article in journal (Refereed) Published
The strength of electronic correlation effects in the spin-dependent electronic structure of ferromagnetic bcc Fe(110) has been investigated by means of spin and angle-resolved photoemission spectroscopy. The experimental results are compared to theoretical calculations within the three-body scattering approximation and within the dynamical mean-field theory, together with one-step model calculations of the photoemission process. This comparison indicates that the present state of the art many-body calculations, although improving the description of correlation effects in Fe, give too small mass renormalizations and scattering rates thus demanding more refined many-body theories including nonlocal fluctuations.
Place, publisher, year, edition, pages
2009. Vol. 103, no 26, 267203- p.
IdentifiersURN: urn:nbn:se:uu:diva-138102DOI: 10.1103/PhysRevLett.103.267203ISI: 000273232200045OAI: oai:DiVA.org:uu-138102DiVA: diva2:378922